governor - Runners to orchestrate a high-availability PostgreSQL

---

Compose are no longer maintaining Governor as an active project. We are pleased to say that Governor seeded the Patroni project which Compose has now adopted as their HA solution. We recommend it to anyone seeking similar functionality to Governor. We have archived the project on GitHub; you are free to use it and fork it, but we will not be accepting issues or pull requests.There are many ways to run high availability with PostgreSQL; here we present a template for you to create your own custom fit high availability solution using etcd and python for maximum accessibility.

voyager - ✈️️ Secure Ingress Controller for Kubernetes

---

Voyager is a HAProxy backed secure L7 and L4 ingress controller for Kubernetes developed by AppsCode. This can be used with any Kubernetes cloud providers including aws, gce, gke, azure, acs. This can also be used with bare metal Kubernetes clusters.Voyager provides L7 and L4 loadbalancing using a custom Kubernetes Ingress resource. This is built on top of the HAProxy to support high availability, sticky sessions, name and path-based virtual hosting. This also support configurable application ports with all the options available in a standard Kubernetes Ingress. Here is a complex ingress example that shows how various features can be used. You can find the generated HAProxy Configuration here.

kubernetes haproxy tls ingress appscode voyager

yoke - Postgres high-availability cluster with auto-failover and automated cluster recovery.

---

Yoke is a Postgres redundancy/auto-failover solution that provides a high-availability PostgreSQL cluster that's simple to manage. Note: The ini file can be named anything and reside anywhere. All Yoke needs is the /path/to/config.ini on startup.

postgres auto-failover redundancy nanobox availability-cluster cluster nanopack

kubeadm-ha - Kubernetes high availiability deploy based on kubeadm (for v1

---

kube-apiserver: exposes the Kubernetes API. It is the front-end for the Kubernetes control plane. It is designed to scale horizontally – that is, it scales by deploying more instances. etcd: is used as Kubernetes’ backing store. All cluster data is stored here. Always have a backup plan for etcd’s data for your Kubernetes cluster. kube-scheduler: watches newly created pods that have no node assigned, and selects a node for them to run on. kube-controller-manager: runs controllers, which are the background threads that handle routine tasks in the cluster. Logically, each controller is a separate process, but to reduce complexity, they are all compiled into a single binary and run in a single process. kubelet: is the primary node agent. It watches for pods that have been assigned to its node (either by apiserver or via local configuration file) kube-proxy: enables the Kubernetes service abstraction by maintaining network rules on the host and performing connection forwarding. keepalived cluster config a virtual IP address (192.168.20.10), this virtual IP address point to k8s-master01, k8s-master02, k8s-master03. nginx service as the load balancer of k8s-master01, k8s-master02, k8s-master03's apiserver. The other nodes kubernetes services connect the keepalived virtual ip address (192.168.20.10) and nginx exposed port (16443) to communicate with the master cluster's apiservers.

kubernetes kubeadm ha high-availability cluster nginx keepalived

consul-haproxy - Consul HAProxy connector for real-time configuration

---

Deprecated! This project is deprecated. Consul HAProxy has been replaced by Consul Template. This repository is kept for history and legacy purposes. Please use Consul Template instead.This project provides consul-haproxy, a daemon for dynamically configuring HAProxy using data from Consul.

Trafik - A Modern Reverse Proxy

---

Træfik (pronounced like traffic) is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Swarm mode, Kubernetes, Marathon, Consul, Etcd, Rancher, Amazon ECS, and a lot more) to manage its configuration automatically and dynamically.

reverse-proxy load-balancer http proxy docker microservice marathon mesos consul etcd

HAProxy - The Reliable, High Performance TCP/HTTP Load Balancer

---

HAProxy is a fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence or Layer7 processing. Supporting tens of thousands of connections is clearly realistic with todays hardware.

load-balancer proxy high-availability

rqlite - The lightweight, distributed relational database built on SQLite.

---

rqlite is a distributed relational database, which uses SQLite as its storage engine. rqlite uses Raft to achieve consensus across all the instances of the SQLite databases, ensuring that every change made to the system is made to a quorum of SQLite databases, or none at all. It also gracefully handles leader elections, and tolerates failures of machines, including the leader. rqlite is available for Linux, OSX, and Microsoft Windows.rqlite gives you the functionality of a rock solid, fault-tolerant, replicated relational database, but with very easy installation, deployment, and operation. With it you've got a lightweight and reliable distributed relational data store. Think etcd or Consul, but with relational data modelling also available.

sqlite distributed-systems database relational-database raft consensus distributed-database sql

doorman - Doorman: Global Distributed Client Side Rate Limiting.

---

Doorman is a solution for Global Distributed Client Side Rate Limiting. Clients that talk to a shared resource (such as a database, a gRPC service, a RESTful API, or whatever) can use Doorman to voluntarily limit their use (usually in requests per second) of the resource. Doorman is written in Go and uses gRPC as its communication protocol. For some high-availability features it needs a distributed lock manager. We currently support etcd, but it should be relatively simple to make it use Zookeeper instead.The Doorman master server remembers all clients that currently have capacity and whenever a client asks for capacity it inserts the clients request into its memory and runs the algorithm to figure out what this client should get.

zetcd - Serve the Apache Zookeeper API but back it with an etcd cluster

---

A ZooKeeper "personality" for etcd. Point a ZooKeeper client at zetcd to dispatch the operations on an etcd cluster.Protocol encoding and decoding heavily based on go-zookeeper.

zookeeper etcd

SkyDNS - DNS service discovery for etcd

---

SkyDNS is a distributed service for announcement and discovery of services built on top of etcd. It utilizes DNS queries to discover available services. This is done by leveraging SRV records in DNS, with special meaning given to subdomains, priorities and weights.

docker service-discovery etcd

etcd-operator - etcd operator creates/configures/manages etcd clusters atop Kubernetes

---

Major planned features have been completed and while no breaking API changes are currently planned, we reserve the right to address bugs and API changes in a backwards incompatible way before the project is declared stable. See upgrade guide for safe upgrade process.Currently user facing etcd cluster objects are created as Kubernetes Custom Resources, however, taking advantage of User Aggregated API Servers to improve reliability, validation and versioning is planned. The use of Aggregated API should be minimally disruptive to existing users but may change what Kubernetes objects are created or how users deploy the etcd operator.

etcd kubernetes operator

redis_failover - redis_failover is a ZooKeeper-based automatic master/slave failover solution for Ruby

---

redis_failover provides a full automatic master/slave failover solution for Ruby. Redis does not currently provide an automatic failover capability when configured for master/slave replication. When the master node dies, a new master must be manually brought online and assigned as the slave's new master. This manual switch-over is not desirable in high traffic sites where Redis is a critical part of the overall architecture. The existing standard Redis client for Ruby also only supports configuration for a single Redis server. When using master/slave replication, it is desirable to have all writes go to the master, and all reads go to one of the N configured slaves. This gem (built using ZK) attempts to address these failover scenarios. One or more Node Manager daemons run as background processes and monitor all of your configured master/slave nodes. When the daemon starts up, it automatically discovers the current master/slaves. Background watchers are setup for each of the redis nodes. As soon as a node is detected as being offline, it will be moved to an "unavailable" state. If the node that went offline was the master, then one of the slaves will be promoted as the new master. All existing slaves will be automatically reconfigured to point to the new master for replication. All nodes marked as unavailable will be periodically checked to see if they have been brought back online. If so, the newly available nodes will be configured as slaves and brought back into the list of available nodes. Note that detection of a node going down should be nearly instantaneous, since the mechanism used to keep tabs on a node is via a blocking Redis BLPOP call (no polling). This call fails nearly immediately when the node actually goes offline. To avoid false positives (i.e., intermittent flaky network interruption), the Node Manager will only mark a node as unavailable if it fails to communicate with it 3 times (this is configurable via --max-failures, see configuration options below). Note that you can (and should) deploy multiple Node Manager daemons since they each report periodic health reports/snapshots of the redis servers. A "node strategy" is used to determine if a node is actually unavailable. By default a majority strategy is used, but you can also configure "consensus" or "single" as well.

raftd - A reference implementation for using the go-raft library for distributed consensus.

---

NOTE: This project is unmaintained. If you are using goraft in a project and want to carry the project forward please file an issue with your ideas and intentions. The original project authors have created new raft implementations now used in etcd and InfluxDB.If you want to see a simple raft key-value store see the etcd/raft example.

surging - surging 是一个分布式微服务框架,提供高性能RPC远程服务调用，采用Zookeeper、Consul作为surging服务的注册中心，集成了哈希，随机，轮询作为负载均衡的算法，RPC集成采用的是netty框架，采用异步传输

---

surging 是一个分布式微服务框架,提供高性能RPC远程服务调用，采用Zookeeper、Consul作为surging服务的注册中心，集成了哈希，随机，轮询作为负载均衡的算法，RPC集成采用的是netty框架，采用异步传输

microservices apigateway surging rabbitmq messagepack protobuffer json-serialization consul zookeeper log4net kafka

raft - UNMAINTAINED: A Go implementation of the Raft distributed consensus protocol.

---

NOTE: This project is unmaintained. If you are using goraft in a project and want to carry the project forward please file an issue with your ideas and intentions. The original project authors have created new raft implementations now used in etcd and InfluxDB.This is a Go implementation of the Raft distributed consensus protocol. Raft is a protocol by which a cluster of nodes can maintain a replicated state machine. The state machine is kept in sync through the use of a replicated log.

raft raft-consensus

kubeform - Form your :boat: Kubernetes :anchor: cluster anywhere using CoreOS, Terraform and Ansible

---

Deploy yourself a high-availability Kubernetes cluster, in minutes. Built on Terraform, CoreOS and Ansible.Our recipes for bootstrapping HA Kubernetes clusters on any cloud or on-premise.

kubernetes devops containers docker kubernetes-deployment kubernetes-management deployment

kubespray - Setup a kubernetes cluster

---

If you have questions, join us on the kubernetes slack, channel #kubespray.Note: Upstart/SysV init based OS types are not supported.

kubernetes-cluster ansible kubernetes high-availability bare-metal gce aws kubespray kubernetes-management deployment

tectonic-installer - Install a Kubernetes cluster the CoreOS Tectonic Way: HA, self-hosted, RBAC, etcd Operator, and more

---

Tectonic is built on pure-upstream Kubernetes but has an opinion on the best way to install and run a Kubernetes cluster. This project helps you install a Kubernetes cluster the "Tectonic Way". It provides good defaults, enables install automation, and is customizable to meet your infrastructure needs.Check the ROADMAP for details on where the project is headed.

kubernetes etcd containers container-linux coreos terraform terraform-modules docker oci

go-plugins - Plugins for go-micro {registry, broker, codec, transport, ...}

---

A repository for go-micro plugins.Check out the Micro on NATS blog post to learn more about plugins.

consul nats grpc etcd kubernetes rabbitmq kafka redis mqtt micro-plugin micro go-micro nat codec broker transport